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O-Rings

FSC 5331: O-Rings

Federal Supply Class (FSC) 5331 covers O-rings, the round-section elastomeric seals used to seal static and dynamic joints. The catalog includes O-rings built to AS568, MIL-SPEC, and industry standards.

O-rings seal connections in hydraulic, pneumatic, fuel, and fluid systems by compressing in a groove. They are among the most widely used sealing elements in machinery.

Common materials include nitrile (Buna-N), fluorocarbon (Viton), silicone, EPDM, and PTFE, selected for fluid compatibility and temperature range. Sizes follow standard dash-number series for repeatable replacement.

5331-01-137-5723 (A9722)

NIIN: 01-137-5723
In stock
NSN: 5331-01-137-5723
FSC Code: 5331
MPN: A9722

5331-01-171-6305 (A9688)

NIIN: 01-171-6305
In stock
NSN: 5331-01-171-6305
FSC Code: 5331
MPN: A9688

5331-00-126-5333 (A9646)

NIIN: 00-126-5333
In stock
NSN: 5331-00-126-5333
FSC Code: 5331
MPN: A9646

5331-01-222-9804 (A-9515)

NIIN: 01-222-9804
In stock
NSN: 5331-01-222-9804
FSC Code: 5331
MPN: A9515

5331-01-222-9803 (A-9476)

NIIN: 01-222-9803
In stock
NSN: 5331-01-222-9803
FSC Code: 5331
MPN: A9476

5331-01-222-9805 (A-9516)

NIIN: 01-222-9805
In stock
NSN: 5331-01-222-9805
FSC Code: 5331
MPN: A9516

5331-01-146-0499 (A942350-11)

NIIN: 01-146-0499
In stock
NSN: 5331-01-146-0499
FSC Code: 5331
MPN: A94235011

5331-01-481-8848 (58-1009-71)

NIIN: 01-481-8848
In stock
NSN: 5331-01-481-8848
FSC Code: 5331
MPN: 58100971

5331-01-194-0471 (A-911)

NIIN: 01-194-0471
In stock
NSN: 5331-01-194-0471
FSC Code: 5331
MPN: A911

5331-01-194-4704 (A907)

NIIN: 01-194-4704
In stock
NSN: 5331-01-194-4704
FSC Code: 5331
MPN: A907

5331-01-545-1572 (58-0765-71)

NIIN: 01-545-1572
In stock
NSN: 5331-01-545-1572
FSC Code: 5331
MPN: 58076571

5331-01-285-4803 (A906C-111)

NIIN: 01-285-4803
In stock
NSN: 5331-01-285-4803
FSC Code: 5331
MPN: A906C111

5331-01-194-4703 (A-905)

NIIN: 01-194-4703
In stock
NSN: 5331-01-194-4703
FSC Code: 5331
MPN: A905

5331-01-195-1513 (A-906)

NIIN: 01-195-1513
In stock
NSN: 5331-01-195-1513
FSC Code: 5331
MPN: A906

5331-00-429-1212 (A9000-503)

NIIN: 00-429-1212
In stock
NSN: 5331-00-429-1212
FSC Code: 5331
MPN: A9000503

5331-00-057-4003 (A8962)

NIIN: 00-057-4003
In stock
NSN: 5331-00-057-4003
FSC Code: 5331
MPN: A8962

5331-01-518-0819 (580-046)

NIIN: 01-518-0819
In stock
NSN: 5331-01-518-0819
FSC Code: 5331
MPN: 580046

5331-01-563-3492 (58-0014)

NIIN: 01-563-3492
In stock
NSN: 5331-01-563-3492
FSC Code: 5331
MPN: 580014

5331-01-483-1757 (PM.58.0719.71)

NIIN: 01-483-1757
In stock
NSN: 5331-01-483-1757
FSC Code: 5331
MPN: PM58071971

5331-01-483-2769 (PM.58.0976.71)

NIIN: 01-483-2769
In stock
NSN: 5331-01-483-2769
FSC Code: 5331
MPN: PM58097671

5331-01-258-2596 (A8788)

NIIN: 01-258-2596
In stock
NSN: 5331-01-258-2596
FSC Code: 5331
MPN: A8788

5331-01-571-0321 (57K6472)

NIIN: 01-571-0321
In stock
NSN: 5331-01-571-0321
FSC Code: 5331
MPN: 57K6472

5331-01-172-1853 (A848X9)

NIIN: 01-172-1853
In stock
NSN: 5331-01-172-1853
FSC Code: 5331
MPN: A848X9

5331-01-172-1854 (A848X10)

NIIN: 01-172-1854
In stock
NSN: 5331-01-172-1854
FSC Code: 5331
MPN: A848X10

5331-01-267-1176 (A848X002)

NIIN: 01-267-1176
In stock
NSN: 5331-01-267-1176
FSC Code: 5331
MPN: A848X002

5331-01-467-8738 (C-3317-011)

NIIN: 01-467-8738
In stock
NSN: 5331-01-467-8738
FSC Code: 5331
MPN: C3317011

5331-01-272-7360 (A841106-71)

NIIN: 01-272-7360
In stock
NSN: 5331-01-272-7360
FSC Code: 5331
MPN: A84110671

5331-00-943-9253 (A837X17)

NIIN: 00-943-9253
In stock
NSN: 5331-00-943-9253
FSC Code: 5331
MPN: A837X17

5331-01-304-1148 (A8241-403)

NIIN: 01-304-1148
In stock
NSN: 5331-01-304-1148
FSC Code: 5331
MPN: A8241403

5331-01-304-1145 (A8241-403)

NIIN: 01-304-1145
In stock
NSN: 5331-01-304-1145
FSC Code: 5331
MPN: A8241403

5331-01-304-1147 (A8241-403)

NIIN: 01-304-1147
In stock
NSN: 5331-01-304-1147
FSC Code: 5331
MPN: A8241403

5331-01-304-1146 (A8241-403)

NIIN: 01-304-1146
In stock
NSN: 5331-01-304-1146
FSC Code: 5331
MPN: A8241403

5331-01-303-9578 (A8241-403)

NIIN: 01-303-9578
In stock
NSN: 5331-01-303-9578
FSC Code: 5331
MPN: A8241403

5331-01-303-9579 (A8241-403)

NIIN: 01-303-9579
In stock
NSN: 5331-01-303-9579
FSC Code: 5331
MPN: A8241403

5331-01-304-1144 (A8241-403)

NIIN: 01-304-1144
In stock
NSN: 5331-01-304-1144
FSC Code: 5331
MPN: A8241403

5331-01-284-3725 (A8232)

NIIN: 01-284-3725
In stock
NSN: 5331-01-284-3725
FSC Code: 5331
MPN: A8232

5331-01-542-4591 (M83248/2-019D4)

NIIN: 01-542-4591
In stock
NSN: 5331-01-542-4591
FSC Code: 5331
MPN: M832482019D4

5331-01-280-7522 (A8036.044)

NIIN: 01-280-7522
In stock
NSN: 5331-01-280-7522
FSC Code: 5331
MPN: A8036044

5331-01-129-8669 (A791X73)

NIIN: 01-129-8669
In stock
NSN: 5331-01-129-8669
FSC Code: 5331
MPN: A791X73

5331-01-191-2308 (A7927.001.142)

NIIN: 01-191-2308
In stock
NSN: 5331-01-191-2308
FSC Code: 5331
MPN: A7927001142

5331-01-278-1731 (A791X12)

NIIN: 01-278-1731
In stock
NSN: 5331-01-278-1731
FSC Code: 5331
MPN: A791X12

5331-01-326-9331 (A791X083)

NIIN: 01-326-9331
In stock
NSN: 5331-01-326-9331
FSC Code: 5331
MPN: A791X083

5331-01-219-3998 (A788X5)

NIIN: 01-219-3998
In stock
NSN: 5331-01-219-3998
FSC Code: 5331
MPN: A788X5

5331-01-421-9887 (578064PC9)

NIIN: 01-421-9887
In stock
NSN: 5331-01-421-9887
FSC Code: 5331
MPN: 578064PC9

5331-01-537-3359 (5-780-47-071)

NIIN: 01-537-3359
In stock
NSN: 5331-01-537-3359
FSC Code: 5331
MPN: 578047071

5331-01-230-1592 (A-777-9N-0-02)

NIIN: 01-230-1592
In stock
NSN: 5331-01-230-1592
FSC Code: 5331
MPN: A7779N002

5331-01-172-1868 (A-777-JN-0-01-1)

NIIN: 01-172-1868
In stock
NSN: 5331-01-172-1868
FSC Code: 5331
MPN: A777JN0011

5331-00-484-8047 (A7695-24)

NIIN: 00-484-8047
In stock
NSN: 5331-00-484-8047
FSC Code: 5331
MPN: A769524